65 lines
2 KiB
HTML
65 lines
2 KiB
HTML
<!DOCTYPE html>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="utils.js"></script>
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<script>
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// This file is loaded twice. First this is loaded as a page to trigger
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// prerendering and then loaded as a prerendering page. The trigger page
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// activates the prerendering page.
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// Runs as the trigger page. This page starts prerendering and waits for signal
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// from the prerendering page. After the signal, this page starts activation.
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function runAsTriggerPage() {
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assert_false(document.prerendering);
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// Start prerendering.
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const prerendering_url = location.href + '&prerendering=true';
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startPrerendering(prerendering_url);
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// Activate the prerendering page once it gets ready.
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const bc = new PrerenderChannel('activation-ready');
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bc.onmessage = () => { window.location = prerendering_url };
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}
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// Runs as prerendeirng page. First this page waits for the load event and
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// signals to the trigger page for starting activation. Then, this page fires
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// the prerenderingchange event and tests window.open() in the event.
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function runAsPrerenderingPage() {
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assert_true(document.prerendering);
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window.onload = () => {
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assert_true(document.prerendering);
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// Notify the trigger page of activation ready.
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const bc = new PrerenderChannel('activation-ready');
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bc.postMessage('ready for activation');
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}
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new PrerenderChannel('close').addEventListener('message', () => {
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window.close();
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});
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document.onprerenderingchange = () => {
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assert_false(document.prerendering);
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// Attempt to open a window in the prerenderingchange event.
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const win = window.open('empty.html', '_blank');
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// Send the result to the test runner page.
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const bc = new PrerenderChannel('result');
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if (win) {
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bc.postMessage('opened');
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win.close();
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} else {
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bc.postMessage('failed to open');
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}
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};
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}
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if (new URLSearchParams(location.search).has('prerendering')) {
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runAsPrerenderingPage();
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} else {
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runAsTriggerPage();
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}
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</script>
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